- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 31/04 - Disazo dyes from a coupling component "C" containing a directive amino group
Patent holdings for IPC class C09B 31/04
Total number of patents in this class: 5
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 20945 |
1 |
| Merck Patent GmbH | 5812 |
1 |
| Seiko Epson Corporation | 19425 |
1 |
| FUJIFILM Corporation | 29458 |
1 |
| Sumitomo Chemical Company, Limited | 9047 |
1 |
| Other owners | 0 |